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A PRESSURE VESSEL TEST PROGRAM FOR THE EVALUATION OF ROCKET MOTOR CASE MATERIAL
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Abstract
As part of a continuing program of investigating various materials suitable for solid propellant motor cases, Solar Aircraft Company makes extensive use of small size test vessels. During one phase of the program special consideration was given H-11 type alloy steel and the results of tests on this particular material are presented. The effect of such variables as hardness, test temperature, weld mismatch, improper weld technique, and porosity were examined. For the portion of the program discussed, 78 cylindrical test bottles, 6 inches in diameter, were pressurized to burst. Strain gage, volume yield and other types of instrumentation were employed.
The results are presented in terms of the intentional variables and such possible non-intentional defects as minute cracks. Burst test results are compared with data from tests of flat tensile specimens processed with the pressure vessels. Correlation is obtained up to about 265,000 psi ultimate tensile strength; above this level, scatter in burst strength is apparent.
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Citation
HAYNES, C. and VALDEZ, P., "A PRESSURE VESSEL TEST PROGRAM FOR THE EVALUATION OF ROCKET MOTOR CASE MATERIAL," SAE Technical Paper 600424, 1960, https://doi.org/10.4271/600424.Also In
References
- “Fracture Testing of High-Strength Sheet Materials: A Report of a Special ASTM Committee,” ASTM Bulletin No. 243 January 1960 29 40 244 February 1960 18 28
- Caine K. E. Hodge J. M. Manning R. D. Murphy W. J. Nichols H. J. Reichold H. M. Simulated Service Evaluation of Steels for Solid Propellant Missile Motor Cases . Applied Research Laboratory, United States Steel (Technical Report No. 40.02-070(2) May 6 1960
- Kinnaman E. B. Jacobsen R. F. Tiffany C. F. “An Approach to the Practical Design of Reliable, Light Weight, High Strength Pressure Vessels,” Paper No. 59-109 Institute of Aeronautical Sciences New York 1959
- Results of tests on other materials are discussed briefly in Haynes C. W. Valdez P. J. Rocket Motor Case Material Evaluation by Pressure Vessel Testing . Solar Aircraft Company report RDR 1188 2 May 1960
- Cooper W. E. “The Significance of the Tensile Test to Pressure Vessel Design,” The Welding Journal, Research Supplement 36 1 January 1957
- Cooper considered materials exhibiting even a small amount of reduction of area in a tensile test as ductile
- Srawley J. E. Beachem C. D. Crack Propagation Tests of High-Strength Sheet Steels, Naval Research Laboratory Report No. 5263 10 January 1959
- Bernstein H. Young G. C. Progress Report on Fracture Toughness Tests of High Strength Sheet Metals, NAV0RD Report No. 6496 18 May 1959